Flashing



Jan. 7, 1936; s w s E N 2,027,133

FLASHING Filed March 12, 1930 Patented Jan. 7, 1936 UNITED STATES PATENTOFFICE FLASHING Abraham S. Weinstein, Brighton, Mass.

Application March 12, 1930, Serial No. 435,124

14 Claims.

The present invention relates to flashing, and more particularly to thattype of flashing usually known as through flashing.

Flashing of this character is usually made of sheet copper, and is usedin building, construction in conjunction with the usual layer of mortarbetween brick joints, or between brick and stone joints, to stop and todeflect to the exterior any seepage of water or moisture of infiltrationdown through the wall. It is also .adapted to be used for a similarpurpose over window headers, door headers, at the bottom of a wall whereit meets a lower roof, and in many other such places.

The usual practice is to build a flat sheet of copper into the mortarjoint at the desired place. One of the effects of this practice is tobreak the bond in the mortar at that joint, as mortar does not adheresatisfactorily to copper.

It is an object of the present invention to provide a new. and improvedform of through flashing so formed thatit will overcome theabovementioned disadvantage,-in other words, it will not break themortar joint in which it happens to be embedded, but will insteadenhance the effectiveness of the joint. In addition, it will stillpossess all the advantages of the old type flat sheet copper throughflashing, which was easily and readily worked with and joined to otherflashings, such as base flashings.

This and other objects, which will be apparent to those skilled in theart to which the present invention pertains from a perusal of thedetailed description below, are attained by the embodiments of theinvention hereinafter disclosed, consisting of the construction andnovel combination and arrangement of parts fully described below,illustrated in the accompanying sheet of drawing and pointed out in theclaims hereunto appended.

In the drawing:

Figure 1 represents aplan View of a portion of one form of a strip offlashing embodying the present invention;

Figure 2 is a view similar to Figure 1, but illustrating a modified formof the invention;

Figure 3 represents a sectional view taken through Figure l at line 33,looking in the direction of the arrows, the portion in the circlesbeingenlarged to clearly show the construction of the spring lock Figure3a. is an enlargement of one of the dove-tail portions of Figure 3;

Figure 4 is a sectional view through Figure 1 at line 4-4;

Figure 5 is a section through an exposed portion of the flashing,showing the spring locking joint after it is flattened;

Figure 6 is a section through the top portion of a wall illustratingapplicants improved flash- 5 ing inserted between the top stone courseand the under course of brick, and taken along line 66 of Figure 7.

Figure '7 is a sectional view taken along line 1-1 of Figure 6, showinga form of applicants 10 flashing in connection with the ordinary roofflashing;

Figure 8 is a view similar to Figure '7, but showing an expansion lockjoint between the through flashing and the roof flashing;

Figure 9 is a view similar to Figure 7, and illustrating a form. ofapplicants flashing used in connection with a narrow .wall; and

Figure 10 is a view similar to Figure '7, and showing another. method ofconnecting the exposed portionof the through flashing.

In the drawing, like reference numerals refer to like parts throughoutthe several views.

Reference numeral I0 indicates a strip or plate or sheet of the throughflashing constituting the present invention. The strips II) arepreferably constructed of. sheet metal, usually copper. Intermediate theends of each strip, it is provided with one or more upwardly displacedareas H. These displaced areas II have straight sides l2preferablyparallel to the ends of the strip -I0, and rounded or arcuateends I3 extending the walls M connecting the sides of the areas 35 .l Iwith the body of the strip are inclined to form a dove-tail groove ordepression or recess therebetween, as is clearly shown in Figures 3 and3a. In addition, each wall [4 forms a groove or recess between itselfand the wall I4 of the next adjacent displaced area H; see Figure 3. Asis clear from the drawing, the lastnamed grooves extend uninterruptedlyacross the flashing sheet or plate In whereby, when the flashing isembedded in a wall, water of infiltration seeping downwardly through thelatter may drain freely thereacross. The walls [5, connecting the endportions l3 to the body of the strip are not inclined.

In the form shown in Figure 2, the sides I2 of the area II as well asthe rounded ends l3, are connected to the body of the strip Ill byinclined walls. 7

As is clearly shown on the drawing, displaced areas or parts II and thewalls which connect them to the body of the flashing sheet Ill definestruck-up encased projections extending up- Wardly from the body of thesheet.

An important detail of the present construction is that the edges, atwhich the walls l4 join the areas I I and the body of the strip II], arerounded avoiding sharp angular edges at these points. These roundededges tend to minimize the chances of the mortar within the dovetailgroove to chip and loosen.

Along one edge each strip 10 is provided with a springy socket member orrib l6, and at its other edge with a locking lug or rib l1. As eachstrip of flashing is laid in place on the wall, its socket member I6 issprung over the locking lug ll of the next adjacent strip l0, thuskeeping the several strips securely in place while they are beingcovered with a layer of mortar. 4

In Figure 6, several strips ll! of flashing are shown embedded in themortar layer l8 which binds together the stone course H1 at the top ofthe wall and the under course of brick 20. This view also clearly showsthe spring locking joint embedded in the layer of mortar. That portionof the joint which is not embedded in the mortar but which is exposed,is flattened down to form the ordinary welt joint, as shown in Figure 5.

- The areas II are of slightly less extent transversely of the flashingstrip in than the Wall with which the flashing'coacts, while theflashing per so may be of any desirable width. Thus it is evident thatwherever the flashing extends out of the mortar it does so in the formof a single flat sheet of metal, that is, the extending or flangeportion of the flashing is free from displaced areas and is thereforeadapted to be worked with readily.

As a result of the dove-tail character of the grooves formed by theinclined or obliquely disposed walls l4, each of which acts as a key forthe mortar on each side thereof, a perfect mechanical bond is formedbetween the mortar above and below the flashing, notwithstanding thefact that the mortar does not satisfactorily adhere to the sheet metalof the flashing.

In Figure '7, the exposed portion 2| of the flashing strip I is shown inoverlapping relationship with the ordinary type of roof fiashto bereadily connected to the roof flashing bymeans of an expansion lockjoint, as shown at 23- in Figure 8, while at the same time a perfectbondis maintained at the-mortar joint in which the flashing is embedded.

Figure 9 shows the flashing as used in rather narrow walls. Here thetype of flashing shown in Figure 2 is preferably used, because itprovides a mortar lock joint which is as long as possible.

In Figure 10, another type of joint where applicants through flashing iswell adapted to be used, is illustrated.

Having described the invention, what is claimed and desired to secure byLetters Patent is:

1. A sheet metal flashing for masonry structures comprising a sheet ofsheet metal of the Width to extend substantially through the wall ofsaid structure and thereby provide a means for deflecting and drainingmoisture of infiltration from said wall, said flashing being deformed toprovide a series of struck-up encased projections extending upwardlyfrom the. sheet pro viding recesses on opposite sides of said sheet forthe reception of mortar to bond the flashing sheet and masonry structureagainst relative movement in all directions.

2. A sheet metal flashing for masonry structures comprising a sheet ofsheet metal of the width to extend substantially through the Wall 10 ofsaid structure and thereby provide a means for deflecting and drainingmoisture of infiltration from said wall, said flashing being deformed toprovide a series of struck-up encased projections extending upwardlyfrom the sheet providing recesses on opposite: sides of said sheet forthe reception of mortar to bond the flashing sheet and masonry structureagainst relative movement in all directions, the recesses on the upperside of said sheet being arranged between said projections and extendinguninterruptedly transversely of the sheet.

3. The construction defined in claim 1, said projections beingdovetail-shaped in at least one cross section thereof. 4

4.. A through wall sheet metal flashing comprising a sheet of sheetmetal deformed to provide a series of struck-up encased projectionsextending upwardly from the sheet providing recesses on opposite sidesof said sheet for the reception of mortar to bond the flashing sheet andwall against relative movement in all directions, said projections beingdovetail-shaped in all vertical cross sectionsthereof.

5. A sheet metal flashing comprising a body portion and a flangeportion, said body portion comprising a plurality of spaced partsdisplaced upwardly-from said body portion and connected thereto bytapering walls, whereby a plurality of hollow projections is formed, theareas of said displaced parts being greater than the areas of theopenings of said projections, said flange portion being adapted to beeasily joined to other flashing or the like.

6. As an article of manufacture, a bonding flashing comprising a sheetmetal plate presenting a plurality of hollow projections, each of whichis surrounded completely by a portion of the body of the plate, eachprojection comprising an obliquely disposed wall adapted to serve as akey for mortar.

7. A through wall interlocking flashing strip comprising a plurality ofupwardly-extending, hollow, mortar-bonding projections, each of which issurrounded completely by a portion of the body of the strip, eachprojection comprising a wallextending therearound whereby the projectionis connected to the body of the strip,

a portion at least of said wall being obliquely disposed whereby it isadapted to serve as a key 0 for mortar, and riblike connecting meansextending transversely across the flashing strip adjacent the endsthereof. 7

8. A building construction comprising superposed courses of masonryconstituting a wall, a layer of mortar or like binding material betweenadjacent courses, a flashing comprising a portion embedded in said layerof mortar or the like and a portion extending from said layer forconnection to other flashing or the like, and means on said embeddedportion of flashing for interlocking and keying the mortar thereabovewith the mortar therebelow, said means comprising spaced areas displacedfrom the body of said flashing and connected thereto by endless walls,whereby a plurality of hollow projections is formed, a portion at leastof each of said walls being obliquely disposed.

9. As an article of manufacture, a bonding flashing comprising a sheetmetal plate provided with a plurality of hollow projections, each ofwhich is surrounded completely by a portion of the body of the plate,each projection comprising a plurality of obliquely disposed wallsadapted to serve as keys for mortar, and walls extending between andinterconnecting said obliquely disposed walls. f

10. As an article of manufacture, a bonding flashing comprising a sheetmetal plate provided with a plurality of hollow projections, each ofwhich extends upwardly from and is completely surroundedby a portion ofthe body of the plate, each projection comprising a plurality ofobliquely disposed walls extending transversely across said plate andadapted to serve as keys for mortar, and arcuate walls extending betweenand interconnecting said obliquely disposed walls.

11. A through wall flashing for masonry wall structures including amortar joint, said flashing comprising a sheet metal plate adapted to beembedded, in part at least, in said mortar joint, the embedded part onlyof said plate being provided with a plurality of spaced hollowprojections displaced upwardly from said plate providing recesses onopposite sides of the latter, each of the said projections beingsurrounded completely by a portion of the body of the plate and eachcomprising an obliquely disposed wall adapted to serve as a key formortar, the recesses on the upper side of said plate being arrangedbetween said projections and extending uninterruptedly transversely ofthe plate.

12. A through wall flashing for masonry wall structures including amortar joint, said flashing comprising a sheet metal plate adapted to beembedded, in part at least, in said mortar joint, the embedded part ofsaid plate being 5 provided with a plurality of struck-up, hollow,elongated projections providing corresponding mortar-receivingdepressions on the under side of the plate and grooves extendingtherebetween on the upper side or the plate, each of the saidprojections being surrounded completely by a portion of the body of theplate and each being dovetail-shaped in at least one cross sectionthereof.

13. The construction deflned in claim 12, said grooves also beingdovetail-shaped in cross section.

14. A through wall flashing for masonry wall structures including amortar joint, said flashing comprising a sheet metal strip including aportion adapted to be embedded in said mortar joint and a portionadapted to extend from said joint for connection to other flashing orthe like, means at the ends of said strip for connecting the latter tocontiguous flashing strips, said embedded portion being provided with aplurality of upwardly displayed, hollow, elongated projections extendingtransversely across the strip and providing corresponding depressions onthe underside of the strip and grooves extending therebetween on theupper side of the strip, each of the said projections being surroundedcompletely by a portion of the body or the strip and each comprising anendless wall extending therearound, portions of the said wall beingobliquely disposed in different directions.

ABRAHAM S. WEINSTEIN.

